Holddown for lasting-machines.



M. COOK.

HOLDDOWN FOR LASTING MACHINES.

APPLICATION FILED JULY 22, 1913.

I Patented Apr. 7, 1914.

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COLUMBIA PLANOGRAPH C0" WASHINGTON. D. C

2/52"??? away: 21. a-cilwk MILLER COOK, OF WHITMAN, MASSACHUSETTS;

HOLD'DOW N FOR LAST'ING-MAGHINES.

To all whom it may concern Be it known that I, MILLER COOK, a citi- Zenof the United States, and resident of WVhitman, in the county ofPlymouthand State of Massachusetts, have invented certain new and usefulImprovements in Holddowns for Lasting-Machines, of which the followingis a specification,

The present invention relates in its general nature to the same subjectas my prior patent entitled Hold-downs for lasting machines No.1,047,387 dated December 17, 1912, and has the same general objects asthe device described and claimed in said patent.

Specifically the present invention consists in certain improvements inconstruction and mode of assembling the parts of the holddown providedto make the disconnectible connection between the hold-down plate andits supporting arm perfectly secure and with little or no backlash,without increasing the difficulty of disconnecting and reconnecting theh0ld-down plate when changes are required.

I have illustrated the preferred embodiment of the improvements in whichmy invention consists, in the accompanying drawings in which Figure 1 isa plan view of my improved hold-down device in the operative positionwhich it occupies in bearing upon an inner sole placed on a last. Fig. 2is a section on line 22 of Fig. 1. Fig. 3 is a plan view of thehold-down removed from the shoe. Fig. 4 represents a longitudinalsectional elevation on line 4-4 of Fig. 3. Fig. 5 is a plan view of thehold-down plate showing the manner in which the same is connected withits carrying arm. Fig. 6 is a cross sec tion of the same on line 6-6 ofFig. 5, Fig. 7 is a plan view of an end of the machine arm to which thehold-down device is connected. Fig. 8 is a plan view illustrating indotted lines the manner in which the holddown plate is connected withand disconnected from its supporting arm. Fig. 9 is a detail sectionalview on line 9-9 of Fig. 2. Fig. 10 is an under plan View of the arm ofthe hold-down device and its associated spring.

The same reference characters indicate the same parts in all thefigures.

In the drawings 11 represents the hold down plate proper, which isconstructed substantially as described and illustrated in Specificationof Letters Patent.

Application filed July 22, 1913.

Patented Apr. .7, 1914.

Serial No. 780,526.

my prior patent above specified and has a key-hole shaped slot 12consisting of a narrow part with an enlargement 13 and a smallerenlargement 14, the latter being approximately circular and the formerbeing of any desired shape, provided it conforms to the shape of theconnecting stud hereinafter described. The supporting arm for thehold-down plate is shown at 15 and is provided with a reinforcing stripor plate 16 which is connected rigidly with the arm 15 at a point,remotefrom the hold-down plate, and extends over the arm to stiffen and holdyieldingly the resilient arm 15. The arm and the reinforcing strip ortongue are secured together by any suitable means such as rivets 17 orotherwise. The arm 15 in its end remote from the hold-down plate has anopen end and slot 18 formed at its inner end with a circular enlargement19, such slot being adapted to receive the stem 20 of a stud 21 which isfixed in an arm 22. Said arm 22 is a part of the lasting machine towhich the hold-down attachment is connected. The head 21 of stud 20 isat a distance from the arm 22 suflicient to admit the end of the arm 15,reinforce 16 and a spring which I will presently describe, and is nearenough to the arm 22 so that such spring may retain the hold-down armfrictionally. The diameter of the stud 20 is somewhat larger than thewidth of the slot 18 and is about equal to the diameter of theenlargement 19, while the sides of the stud are cut away toa widthslightly less than that of the slot 18, the aim being to enable the holddown arm to be attached to the machine arm 22, that is, when the slot isin line with the flattened sides of the stud, and to be locked when thestud is in the enlargement 19 and the hold-down arm is turned. Theconnection between the arm 15 and the hold-down plate 11 is made by astud 23 having a shank 24 which is smaller than its head, and the sidesof which are cut away as shown in full lines in Figs. 5 and 8 and indotted lines in Figs. 3 and 10. The head of stud 23 is adapted to passthrough the enlargement 13 of the slot 12 in the hold-down plate, andthe shank to reside in the smaller enlargement 14 of that slot. Thelonger diameter of stud 24 is approximately equal to the diameter ofenlargement 14 and greater than the width of the narrow neck of theslot, while the smaller width of the stud, between the flattened sidesthereof is less than the width of the slot 12. The stud is fixed in thearm 15 with its longer diameter trans- Verse to the length of the armalso to the longitudinal medium line of the hold down plate. Thus whenthe arm is connected with the hold-down plate in the normal position,which is that illustrated in Figs. 1, 2, 8, 4, and 5, the stud is heldin the enlargement 14 with its flattened sides approximatelyperpendicular to the narrow part of the slot, the hold-down plate beingthen locked so that it can not move in any direction except oscillatablythrough a slight angle about the stud 24. The amount of oscillation islimited by the walls and 26 of a shallow recess in the hold-down platein which the arm 15 lies.

A spring 27 in the form of a resilient plate 7 or strip having theoutline of the arm 15 and'having a slot in the end which corresponds tothe slotted end of said arm, is placed under this arm and is held inpro-per position by lugs 28 on its sides which embrace the arm 15, andby stud 29 on the latter which enters a hole in the spring. The springextends under the rear end of the hold-down plate and has a tongue 30which projects up into the enlargement 13 of the slot in said plate,very near to the rear boundary of such enlargement. The pin 29 on thespring 27 enters a complemental recess in the-arm 15 when the slots inthe spring and arm are in registry, thereby enabling the spring and armto be together passed over the stud 20. As the spring diverges from thearm between the slotted end of the latter and the hold-down plate, it ispressed upon and forced toward the arm when inserted between the machinearm 22 and the stud head 21, the space between which is less than thedistance between the spring and the outer side of the arm when thespring is unconfined. Thereby the spring is put under stress and causedto perform the double function of exerting a friction on the machine arm22 which resists swinging thereof, and to hold the toe plate at the rearend so that the same can neither become instantly disconnected from thearm 15 nor hang loosely from the stud 24.

In other respects the hold-down device is substantially like thatillustrated in my patent above referred to, the hold-down plate beingdetachable and reversible, so that the same plate may be used inconnection with right and left shoes of the same sizes and styles, andso that other plates for other styles and sizes of shoes may besubstituted.

In order to make such change of substitu-' tion of the hold-down plate,the hold-down arm must be removed from the machine arm 22, which can bedone by a simple movement when the hold-down arm is in the positionshown in Fig. 3. The spring 27 can then be readily removed as it isunconfined, and

this releases the hold-down plate so that it .arm are assembled, thewider dimension of the stud shank extends across the slot 13, and thespring 27 prevents the hold-down plate in turning far enough to permitdisengage ment. In this manner of fastening, the tongue 30, lugs 28, andstud 29 form positive locking means which absolutely and positivelyprevent accidental separation of the hold-down plate from its arm. Inthe device shown in my prior patent the holddown plate is securedyieldingly by a spring, and may be accidentally displaced;

The tongue or lip 30 on the spring plate 27 enters the enlargement 13 ofthe slot or recess in the hold-down plate and bears against the shoulderformed by the rear edge of such recess. This tongue is an additionalmeans for preventing movement of the holddown plate longitudinally ofthe arm. That is, even without the shoulders formed at each side of themerger of the slot 12 with the enlargement 14, the tongue or lip wouldstill be effective to prevent move ment of the plate away from the endof the arm 15. The stud 24 and this tongue together constitute positivemeans for preventing movemnt of the plate in any direction relatively tothe arm when the plate is in its normal position and the spring arm 27is assembled with the arm 15.

WVhat I claim and desire to secure by Letters Patent is 1. Thecombination of an arm, a stud mounted on said arm having a headdisplaced from the adjacent surface of said arm and having a shank ofwhich the oppo site sides are flattened, and a hold-down devicecomprising an arm, a spring, and a hold-down plate contained betweensaid spring and said last named arm, said lastnamed arm and spring eachhaving an open slot in its end of a width adapting it to he slipped overthe flattened sides of the aforesaid stud, and less than the longestdiameter of said stud, and having also an enlargement merging with saidslot of a diameter suflicient to contain the longest diameter of saidstud.

2. In a hold-down device for lasting machines the combination of ahold-down plate, an arm, a coupling device between said arm and plateformed to prevent disengagement of the arm from the plate except uponrelative rotation through approximately a right angle, and a springarranged to take up looseness between the plate and arm and havingpositive means for preventing such relative rotation.

3. A hold-down device for lasting machines comprising in combination anarm, a hold-down plate having a slot provided with an enlargement, acoupling stud on said arm having a head adapted to enter saidenlargement and a shank of less size adapted to pass from theenlargement through said slot, a lock for preventing rela tive movementbetween said arm and plate, and a main support having means fordetachable engagement with said arm and having means for securing saidlock.

4. In a hold-down device for lasting machines the combination with apart of the machine forming a support, a stud mounted in said supporthaving a head extending over a surface of said support and separatedtherefrom, an arm detachably engaged with said stud at one end, acoupling member secured to said arm near its other end, a holddown plateswivelly mounted upon said stud constructed to be locked with orreleased from said stud by turning thereon, and a spring having one endconfined between said support and its stud and its other end bearing onthe hold-down plate, said spring being placed under tension by saidsupport and caused to press the hold-down plate toward the arm, andhaving a positive looking means to limit pivotal movement of thehold-down plate.

5. In a hold-down device for lasting machines the combination of an arm,a stud projecting from one face ofsaid armand having a head and a shank,a hold-down plate having a recess in which said shank is contained andhaving a slot communicating with said recess of a width less than thatof the recess and intermediate the longer and'shorter diameters of thestud, said plate being separable from said arm only by a combination ofrotative and translative movements, positive means for restraining therotative movement within limits less than sufficient to permitseparating translative movement of the plate, and a support to whichsaid arm is detachably connected said support being constructed andarranged to hold said locking means in looking position.

6. The combination of an arm, a holddown plate having a shoulder, acoupling device between said arm and plate, and a complemental armbearing on the side of the plate opposite to the first arm and having atongue or lip engaged with the shoulder of the plate.

7. The combination of an arm, a holddown plate having a shoulder, acoupling device between said arm and plate, and a complemental armbearing on the side of the plate opposite to the first arm and having atongue or lip engaged with the shoulder of the plate and so disposed asto positively oppose movement of the plate in one directionlongitudinally of the first arm.

8. A. hold-down device comprising an arm, a hold-down plate, a couplingstud on said arm, said plate having a slot in which said coupling studis contained, a portion of such slot being of less width than the headof said stud, and another portion of such slot being of greater areathan the head of the stud, and the stud being normally contained in theportion of said slot which has the less width, a spring arm arranged onthe opposite side of said plate from the first named arm and having ameans for limiting the movement of the plate with respect to the firstnamed arm to an amount less than suflicient to permit disconnection ofthe plate from the coupling stud, and means for retaining said springarm in operative position.

9. A hold-down device for lasting machines comprising in combination, amain supporting arm, a stud projecting from said arm and having a head,a second arm having a slot at one end adapted to be placed upon saidstud between the head thereof and the main arm, a coupling stud carriedby the second named arm, a hold-down plate having a slot adapted toreceive the shank of said coupling stud and formed to permitdisengagement of the plate from said coupling stud in consequence ofmovement relatively to the stud, and a spring arm arranged in parallelwith the second named arm and having one end underlying said hold-downplate and its other end confined between the second named arm and thehead of the first named stud, said spring arm having a locking deviceengaging the hold down plate and arranged to prevent said plate frombeing moved sufiiciently to become disengaged from the coupling stud,and said spring arm also serving to take up looseness between the secondnamed arm and the first named arm.

In testimony whereof I have affixed my signature, in presence of twowitnesses.

MILLER COOK. Witnesses:

E. BA'roHnLDnR, J. MURPHY.

Copies of this patentmay be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

